基于PCI总线的视频图像采集系统设计与实现

从自主研发的角度，介绍了一种以PCI总线为接口，以CPLD为数据采集逻辑控制单元的视频图像采集系统。在介绍系统组成结构的基础上，详细讨论了采集部分的功能实现和CPLD的控制逻辑。采用CPLD实现视频信号的数据采集，可提高系统性能，同时具有适应性和灵活性强，设计、调试方便等优点。目前，系统已达到预期设计目标，成功地实现了视频信号的采集。

Design and Realization of an Image Acquisition System Based on PCI Bus

In an image acquisition system,PCI bus is used as the interface,and CPLD controls to realize the data acquisition for video signal. In this paper,the principal of the image acquisition system is introduced. Two parts are expounded in details,such as function realization of acquisition part and control logic of CPLD. Using CPLD to realize video signal acquisition will enhance the system capability,and easy to design and debug. It also has such advantages as adaptability and flexibility. At present,the system achieves expectant objective and grabs video signal successfully.